In Memoriam

In memoriam: John DeMoss

Nipuna Weerasinghe
Oct. 2, 2023

John  Alan “Jack” DeMoss, chair emeritus of the Department of Biochemistry and Molecular Biology at the University of Texas Houston McGovern Medical School and a former member of the Journal of Biological Chemistry editorial board, died from complications of cancer on May 7. He was 93. 

John DeMoss

DeMoss was born in Indianapolis, Indiana on April 10, 1930, to Ruby and Guy DeMoss. He earned his bachelor’s degree in bacteriology in 1952 from Indiana University and his doctorate in microbiology from Case Western Reserve University in 1957.  Following a two-year tenure as a  National Institutes of Health postdoctoral fellow at the Yale University Medical School studying biochemical genetics, he started his first faculty position in 1959 as an assistant professor in the Yale Department of Microbiology. 

In 1961, DeMoss moved across the country to become one of four founding professors of the Department of Biology at the University of California, San Diego. Two years later, he undertook a similar adventure, traveling to Houston to become the founding chair of the Department of Biochemistry and Molecular Biology at the UT Houston medical school. He served as chair for 21 years, from 1971 until 1993, and continued as a professor at UT, actively involved in research and teaching programs, until his retirement in 1999. 

DeMoss had a long and successful research career studying the structure and function of nitrate reductase in E. coli and various protein complexes involved in tryptophan synthesis in the mold Neurospora crassa.

Outside his lab and university, DeMoss also served on numerous National Institutes of Health grant review committees and advisory boards, as a member of the National Board of Medical Examiners for Biochemistry, as president of the Association of Medical School Departments of Biochemistry and as an editorial board member of the Journal of Bacteriology and the JBC.

His greatest legacy is his mentoring of early-career faculty while helping to found departments at two medical schools. 

DeMoss is survived by his wife of 43 years, two sons, five grandchildren, and five great-grandchildren.

Enjoy reading ASBMB Today?

Become a member to receive the print edition four times a year and the digital edition weekly.

Learn more
Nipuna Weerasinghe

Nipuna Weerasinghe holds a bachelor’s degree in chemistry from the University of Colombo, Sri Lanka, and a master’s degree in chemistry from the University of Arizona.

Related articles

In memoriam: Roger Thibert
Christopher Radka
In memoriam: Thomas Devlin
Elisabeth Adkins Marnik
In memoriam: Bacon Ke
Christian McDonald

Get the latest from ASBMB Today

Enter your email address, and we’ll send you a weekly email with recent articles, interviews and more.

Latest in People

People highlights or most popular articles

Transforming learning through innovation and collaboration
Award

Transforming learning through innovation and collaboration

Nov. 22, 2024

Neena Grover will receive the William C. Rose Award for Exemplary Contributions to Education at the 2025 ASBMB Annual Meeting, April 12–15 in Chicago.

Guiding grocery carts to shape healthy habits
Award

Guiding grocery carts to shape healthy habits

Nov. 21, 2024

Robert “Nate” Helsley will receive the Walter A. Shaw Young Investigator in Lipid Research Award at the 2025 ASBMB Annual Meeting, April 12–15 in Chicago.

Leading the charge for gender equity
Award

Leading the charge for gender equity

Nov. 19, 2024

Nicole Woitowich will receive the ASBMB Emerging Leadership Award at the 2025 ASBMB Annual meeting, April 12–15 in Chicago.

Honors for de la Fuente, Mittag and De La Cruz
Member News

Honors for de la Fuente, Mittag and De La Cruz

Nov. 18, 2024

César de la Fuente receives the American Society of Microbiology’s Award for Early Career Basic Research. Tanja Mittag and Enrique M. De La Cruz are named fellows by the Biophysical Society.

In memoriam: Horst Schulz
In Memoriam

In memoriam: Horst Schulz

Nov. 18, 2024

He was a professor emeritus at City College of New York and at the CUNY Graduate Center in Manhattan whose work concentrated on increasing our understanding of mitochondrial fatty acid metabolism and an ASBMB member since 1971.

Computational and biophysical approaches to disordered proteins
Award

Computational and biophysical approaches to disordered proteins

Nov. 14, 2024

Rohit Pappu will receive the 2025 DeLano Award for Computational Biosciences at the ASBMB Annual Meeting, April 12-15 in Chicago.